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What do the indicator lights on the front of my dryer represent?

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What do the indicator lights on the front of my dryer represent?
The lights on the front of the dryer help during the troubleshooting process for the dryer.

Gas-fired dryers have several amber status lights on the front panel used to monitor the dryer doors and heating system. Some of these lights are operated by the machine controller and some are operated by the fire control unit (Fireye® or Landis+Gyr). When an error condition causes a light to either illuminate or extinguish, an error message is displayed. For lights operated by the fire control unit, the error message will say “CHECK ERROR LIGHTS.”

Note:

If a light is lit and stays steady, the error condition is still in occurring. If the light is flashing, the error had occurred but the state returned to normal operation. To reset the flashing light, press the reset button marked with // on the side of the dryer.  

If you are working on an older dryer, know that lights do burn out!  So, if the dryer won't fire and has a Check Error Light message, there should be a light illuminated showing the error.  You may decide that replacing lights is easier than blindly troubleshooting the circuit.  

 

Error Light Conditions

No ErrorError currentlyError Occurred, but not currently occurring
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Gas Dryer Status Lights and descriptions below.  

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  1. Load Door Closed

    This light (ELLDC) indicates that the load door is fully closed. If the load door is not fully closed 15 seconds after the dryer receives the Loaded signal, the Load Door Open message is displayed.
  2. Load Door Open

    This light (ELLDO) indicates that the load door is fully open. If the load door does not open fully within 15 seconds of the “open load door” command from the microprocessor, Load Door Not Open is displayed.
  3. Discharge Door Closed

    This light (ELDDC) indicates that the discharge door is completely closed. If the controller does not detect the discharge door closed, it will permit the load door to open for loading, but it will not signal the loading device to begin loading and the message Discharge Door Open will be displayed.
  4. Pilot Valve Enabled

    This light (ELPG) indicates that the flame control unit has energized the pilot valve.
  5. Main Gas Enabled

    This light (ELMT) indicates that the flame control unit has energized the modulating gas valve and the main gas valve.
  6. Ignition Enabled

    This light (ELMI) indicates that the flame control unit is attempting to ignite the flame.
  7. Burner Box Pressure High

    This light (ELBB) indicates that the permissible burner box pressure has been exceeded. This is an error condition. This is cause by the pressure in the fire box exceeding the pressure in the laundry.  This helps flame escaping the fire box backwards through the open area around the burner. 
  8. Combustion Air Low

    This light (ELCA) indicates that combustion air flow delivered to the dryer is too low for proper operation.
  9. Main Air Low

    This light (ELMA) indicates that main air flow delivered to the dryer is too low for proper operation.
  10. Gas Pressure Low

    This light (ELGL) indicates that the gas pressure delivered to the dryer is too low for proper operation, or the gas regulator is damaged.
  11. Gas Pressure High

    This light (ELGH) indicates that the gas pressure delivered to the dryer is too high for proper operation, or the gas regulator is damaged.
  12. Fireye Tripped

    If the machine is equipped with a Fireye fire control unit, this light (ELFET) indicates that the flame rod signaled the flame control unit that neither the pilot nor the burner is lit.
    This light is sometimes provided when the machine is equipped with a Landis & Gyr fire control unit. If so, it has the same meaning as the Fire Controller Locked Out status light below.
  13. Fire Controller Locked Out

    If the machine is equipped with a Landis+Gyr fire control unit, this light (ELCLO) indicates that the microprocessor requested fire, but the flame control unit was disabled because one of the conditions required by the safety reset circuit was not satisfied. 
 
 
 

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